Research On Deformation Prediction And Compensation Method Of Thin Wall Curved Surface Machining

China’s economy continues to accelerate its development.In the entire development process,the manufacturing industry has provided tremendous impetus for its acceleration of economic development.In the manufacturing industry,thin-walled curved parts are widely used in the production of various types of products,including aviation.The most common use of aerospace.However,due to the low rigidity of the thin-walled curved parts,it is very easy to deform during the processing process,which makes the processing more difficult.Therefore,this paper studies the prediction and compensation methods for machining deformation of thin-walled curved parts,and uses a thin-walled impeller part as For example,the deformation prediction and compensation simulation in the machining process are discussed and verified by machining experiments.Firstly,the machining characteristics and simplification methods of thin-walled parts are analyzed,the cutting force model of thin-walled parts is established,the calculation method of elastic deformation of thin-walled parts and tools is analyzed,and the prediction method of machining deformation of thin-walled parts is explained.Secondly,the paper briefly analyzes the deformation control strategy,expounds the relevant ideas of using the compensation method,and calculates the calculation method of the compensation machining error,and analyzes the active compensation methods of the thin-walled surface parts cutting from two aspects of curve fitting and surface reconstruction.In addition,a detailed analysis of the related problems of cutting deformation is carried out to discuss the deformation laws produced during the processing,and the results are used to analyze the solutions to reduce the deformation.Finally,in order to verify the effectiveness of the prediction and compensation method for the machining of thin-walled parts in this paper,an impeller machining is taken as an example to carry out experimental design,including preparation,generation of tool path and selection of experimental materials and equipment.Type design;machining experiments,including the NC code generation and cutting machining experimental process;comparing the machining experiment results with the compensated deformation simulation results,using the precise measuring instrument to measure the various positions of the blade.The results show that: After the compensation method was studied,the errors generated during the blade machining process were significantly improved.Although the error was only partially compensated for the resulting error,the error could not be completely corrected,but various types of compensation were shown after compensation.Data such as X-axis maximum translation error is 0.07 mm,Y-direction maximum translation error is0.088 mm,maximum warpage deformation on both sides is 0.097 mm,and maximum torsional deformation is 11.86’,all within the requirements of workpiece production.Can understand this error compensation can play a certain correction effect.Therefore,the deformation prediction and compensation methods for thin-walled parts proposed in this paper are correct and effective.